/Engine/Source/Runtime/AudioMixer/Public/AudioMixerDevice.h
virtual void RemoveSpectralAnalysisDelegate ( [USoundSubmix](API\Runtime\Engine\Sound\USoundSubmix) * InSubmix, const [FOnSubmixSpectralAnalysisBP](API\Runtime\Engine\Sound\FOnSubmixSpectralAnalysisBP) & OnSubmixSpectralAnalysisBP )